152 CONNECTICUT GEOL. AND NAT. HIST. .PURVEY. [Bllll. 



Fruit rare, autumn. Tolland: Stafford, Nichols. New 

 Haven: Cheshire, £z/a;i.?; Hamden (1876), P^a^y^. 



Nova Scotia to Manitoba, south to Maryland and Missouri. 



Ref. Eaton, 15, 67. 



Isopterygium turfaceum Lindb. Hypnum turf ac cum 

 Lindb. 



In peat bogs or on moist rich soil in the woods. Early 

 summer. Litchfield: Salisbury, Nichols. New Haven: 

 East Haven, Nichols; Woodbridge (1880), /. A. Allen. 



Canada south to Georgia and Texas ; Europe. 



Isopterygium Muellerianum (Schimp.) Lindb. Hypnum 

 Muellerianum Hook. f. 



Moist rocks and earth in mountainous or hilly ravines. 

 Fruit rare, late summer. Litchfield: Salisbury, Miss Lo- 

 renz. Hartford: Manchester, Miss Lorens. New Haven: 

 Beacon Falls, Nichols; Hamden (1880), /. A. Allen. Mid- 

 dlesex : Killingworth, Nichols. 



New England to North Carolina and Ohio ; Europe ; Asia. 



Isopterygium elegans (Hook.) Lindb. Hypnum elegans 

 Hook. 



On the ground and rocks in mountainous or hilly woods. 

 Summer. New Haven : Beacon Falls, Nichols; Woodbridge 

 (1879), /. A. Allen. 



Throughout northern North America, and south along the 

 mountains to Alabama ; Europe ; Asia. 



Plagiothecium Br. & Sch. 



1. Leaves equally spreading, alar cells greatly enlarged; 



branches erect P. striatellum 



Leaves more or less complanate 2 



2. Teeth of peristome not confluent at base and without cross 



striations on outer surface; cilia lacking P. latebricola 



Teeth of peristome confluent at base and distinctly trans- 

 versely striate on outer surface; cilia present 3 



3. Monoicous; stems depressed; leaves distinctly complanate, 



pale green, very glossy P. denticulatum 



Dioicous 4 



